Paper drier and the like



Dec. 29, 1925 1,567,377 H D. MARTINDALE PAPER DRIER AND THE LIKE 2 Sheets-Sheet 1 Filed July 10, 1925 INVENTOR H. D. MARTINDALE PAPER DRIER AND THE LIKE Dec. 29, 1925.

Filed July 10, 1925 2 Sheets-Sheet 2 INVENTOR H N m T T A metho .Patented Dec. 29, v

UNITED STATES 1,567,377 PATENT OFFICE.

HOMER D. mrmnm, OI mnnnrown, OHIO.

PAPER DRIER AND THE LIKE.

Application filed July 19, 1825. Serial- Ho. 42,701."

To all whom it may cmwem:

Be it known that I, Home D. MARTIN- DALE, a citizen of the United States, residin in Middletown, in the county of Butler and State of Ohio, have' invented certain new and useful Improvements in Paper Driers and the like, of which the following is a specification, reference being bad therein to the accompanying drawings.

This invention relates to paper driers having particular reference to improved means foi'1 threading the paper web on the drier r0 s.

A well known arrangement for threading thepaper web on the drier rolls consists in endless carriers, suitable belts or cables traversing grooved portions arranged at one end 7 of the drier ro ls their being two carriers running side by side in such relation one to the other that the leading end of the paper, when the web is threaded on the machine, will be engaged by the carriers and the web drawn forward in a threadingmovement over the rolls.

To revent tearing of the paper, this (i of putting the paper on the machine requires that the carriers and the periphe of the drier rolls shall have the same spe which is accomplished in the best known practice, by ak ng'the grooves in the drier rollsin whic the carriers operate the required depth to cause the outer surface of the carriersto be substantially flushwith the periphery o the rolls.

Thewveb hreading mechanism functions only when the paper is being put on the machine, the carriers running idly over the ends of the drums during the period the paper is dr ing. This is more or less objectionable mm the viewpoint of wear during the idle running period of the carriers, and it is an object, among-others, of my in-. vention to provide an improved web threadingmechanismwhich will be operative only during the time of putting the aper on the machine, the mechanism stan ing at rest during the drying period, with the result that wear of the parts by idle operation is avoided.

threading mechanism and also to influence favorably its effectiveness of operation, the improvement also lending itself to several forms of modified construction which gives the invention an enlarged scope of practical application.

In the accompanying drawings, my invenpended claims.

In the drawings:

Fig. 1 is a side elevation of one unit of a paper drier in which the application of my improved web threading mechanism is illustrated Fig. 2 is a detail sectional view illustrating means for electrically connecting the carrier pulleys with the drier rolls;

Fig. 3 is a detail view in side elevation of the carrier actuating mechanism;

in the following specification and the ap- Fig. 1 is a front elevation partly in section of Fig. 3;

Fig. 5 is a detail perspective view of the carrier chine;

Fi 6 and 7 are detail views of a moditied orm of carrier guides.

The preferred form of construction of the invention, illustrated in Figs. 1, 3, 4, 5, consists of asuitable frame structure 1 which, as here shown, is pyramidal or A-shaped for each section or unit of the machine, only one unitbein shown to illustrate the invention.

The drier rolls 2 are supported in suitable bearings in frame 1, the arrangement of the rolls being in double series to each unit of the machine, each series comprising a double set of rolls in staggered relation one to another, the coacting series being inclined one toward the other upwardly according to the inclination of the A-shaped frame. The

course of the paper over the drier rolls of' each unit is int. serpentine path upward over one set of rolls and downward overthe other set, the drier rolls beingoperated in the well-known manner of dr i'ng machines by being cared, as illustrate 'at 3, one roll with anot er.

v No novelty is here claimed with respect to the construction of the frame of the maguides at the rear end of the ma-' chine and the arrangement of the drier rolls. The invention relates to the means for threading the paper web 4 over the drier rolls when the paper is put on the machine.

The paper threading mechanism consists of two endless carriers 5 arranged one opposite the other along the course of the paper at one end of the drier rolls, the. gears 3 being at the opposite end of the rolls.

The carriers and the drier drumsare actuated by a pulley 6 supported on a drive shaft 7 which also supports a drive gear 8 connected to one of the drums 2 by means of gears .3 and 9. The carrier pulleys 10 are carrier is. directed upward over a pulley 26, the two being thus brought together, as they supported rotatably on a bearing sleeve 1 fixed to frame 1, and are driven from shaft 7 through gears 12, 13, and 14, gears 12 being fixed to drums 10. p

In order to obtain the right relation between the paper web carriers and the'periphery of the drier rolls to thread the paper on the machine, it is necessary that the carriers have the same speed of forward travel at the rotation speed of the rolls, otherwise the paper would tear as a result of the difference of movement. To this end, the ratio of gears 12, 13 and 14 one to the other is such as will 've the carriers the same speed of travel as t e peripheral rotation speed of the drier drums.

While the pulleys 10 are here shown be-- ing geareiLone with another, each pulley thus acting as an additional driver for the.

carriers 5, it'is obvious thatcertain of he gears may be omitted and that an'efi'ect ve driving action can be given to the carriers,

on a single unit machine by means only of the drive pulley 6, the free pulleys lO then operating idly under the friction of carriers .5.

' Thecourse of the paper and the carriers relative to the drier r0 ls, as illustrated in Fig. 1, will be'from left to right, the paper and carriers followingthe'rolls in an ascendin serpentine path over the first series of ro sand i'n adescending path over the second series of rolls. As best shown in Fig. ,5, the courseof one of the carr1ers'5 at'the rear end of I the machine is upward overa guide pulley 25 and thatof the opposite carrier downward .over a pulley 26, thus the carriers are spread one from the other and the'tail 18 of the,pap'er is, released, permit -ting the web to take its normal course as delivered from the machine. At the front end of the machine the upper carrier is directed downward over a pulley 25 and the lower a proach the lower r0112, into normal rela- ,-t1on to engagethe paper in its upward threading course over the first series of drier 1 rolls and downward over the other series.

The modified construction, illustrated in Figs. 6 and 7, consists in an arrangement of a series .of idle guide pulleys 15 adjacent the ends of each drier roll along the course of the paper, the pulleysas here shown be ing supported on a webbed plate 16 secured to the frame of the machine. The travel of the carriers 5 over the guide pulleys 15'will be the same as over the pulleys 10 when the latter are not gear entrained;

A clutch 17 is provided in connection with gear 14 to render the carriers inoperative during the drying operating of the machine,

it being understood that the" carriers have no function other than to coact withthe drier rolls in threading'the paper on the machine.

InFig. 5the manner of connecting the paper web to the carriers is illustrated. A

tail 18 of the paper is formed at one corner of the leading end of the Web and is turned outwardly and inserted between the carriers, the friction between the carriers being suflicient to grip the paper and carry the drive pulley, the opposite face of the. pulley having secured thereto an insulating disc 20 of any other suitable material, upon which two-concentric collector .rings;22 are mounted. The-rin :22 are arranged to coant with brushes 23 supported by the brush holders and forming a means to conduct the electric current to the coil 19... l The end of the r0112 adjacent-to the drive pulley serves as an armature for the electromagne't formed within the pulley and the fact1on of'said magnet is suflicient to cause a drivingrelation between the two.

Any suitable switch will serve for controlling the current to coil 19, for effecting and d srupting driving relation betweenpulley 1Q and the adjacent drums 2, to cause earners; 5 to operate only when paper is being put on the machine. Having described my invention, I claim:

.1. ln a dr mg machine, including in comblnation wit drier rolls, web carriers, normally disconnected from the rolls into synchronized operative relation with said rolls and to carry the leading end of said web' as the same is threaded thereon.

2." In a paper drier machine, including in combination with drier rolls, web carriers, normally d1sconnected from the rolls, operiable over carrier'actu'ating devices coacting with the drier rolls, and adapted to carry the leading end of the'web as w-the same is put on said machine and means for connectinlgl's the web carriers operatively with the re 3. In a paper drier machine, including in combination with drier rolls, web carriers,-

operable over carrier actuating devices, independently of said rolls and means for operatively associating the movements of the carriers and rolls whereby to adapt the car riers to thread the paper web on said rolls.

4. In a paperdrier machine, including in combination with drier rolls, endless paper web carriers, normally in idle relation relative. to the rolls, operable over carrier guiding devices associated with each roll and means to coordinate the movement of the carriers and the rolls whereby to thread the paper web in the machine.

5. In a paper drier machine, including in combination with drier rolls, paper web carriers arranged along the course of the paper over said rolls, timed to the movement of the paper and adapted to coact with the rolls to thread the web on the machine, and

means for controlling the operation of the web carriers inc'lependently of the opera tion of the drier rolls.

6. In a paper drier machine, including in comblnatlon wlth drier rolls, paper web carriers arranged along the course of the paper over said rolls and adapted'to coact with the rolls in threading the paper web thereon, means operable independently of the rolls to actuate said carriers and means as sociated with each roll acting to'guide the carriers along said course.

7. Web threading mechanism for paper driers including endless carriers arranged along the path of the paper and adapted to engage an end of the paper web and to carry the same along in a threading movement over the drier rolls, and means for actuating the web carriers comprising a drive pulley adapted to be electrically connected with one of the drier rolls whereby the carriers will be caused to travel at the same speed as the paper over said rolls.

In testimony whereof, I affix my signature,

HOMER D. MARTINDALE. 

